Andrei Rodionenko has confirmed on RSport that Aliya has eligibility to qualify for Worlds even if she doesn't compete at Russia Cup.
All that is important is that Aliya remains healthy and happy to make her own choices. Rushing to qualify for Worlds might not be the best thing if her back is hurting.
Let us all say - we support Aliya completely in making her own decisions in her own time and space.
Keep Calm and Support Aliya! Good luck to our team's leader!